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Supply Chain Management New Perspectives Part 12

Tham khảo tài liệu 'supply chain management new perspectives part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Reverse Supply Chain Management - Modeling Through System Dynamics 427 Selected Variables unit W eek D Current ----------------------- RPR Current PR Current ---------------------- Fig. 6. Demand production and reprocessing Selected Variables CCIR Current ---------------------------------------- unit Week Week CCRR Current ---------------------------------------- unit Week Week COR Current ------------------------------------------------ unit Week Fig. 7. Collection capacity The collection capacity Fig. 7 and the reprocessing capacity Fig. 8 increase or decrease according to the growth or reduction decisions they receive. 428 Supply Chain Management - New Perspectives RCIR Current ---------------------------------------- unit Week Week RCRR Current ---------------------------------------- unit Week Week RPC Current ------------------------------------------------ unit Week Fig. 8. Reprocessing capacity For the residence time Fig. 9 a random sample of values has been estimated according to a normal probability distribution with a minimum of 10 weeks a maximum of 30 weeks and an average of 20 weeks with a standard deviation of 2 weeks. RT 40 32.5 25 17.5 10 0 50 100 150 200 250 300 350 400 450 500 Time Week RT Current Fig. 9. Residence time Reverse Supply Chain Management - Modeling Through System Dynamics 429 The volume of collected products usually exceeds the number of reusable products until the end of the life of the product when it increases Fig. 10 . Fig. 10. Collected products and reusable products The system also tends to ensure that the number of products disposed in an uncontrolled manner stabilizes at values lower than those of the controlled disposal Fig.11 Fig. 11. Controlled and uncontrolled disposed .